Like the thing with the rollers and different coloured silicone. Why do they combine? I would think pressing them together would just make it layered, and would not mix them together.
In: 1
It’s like folding a sheet of dough and then rolling it out to the original size, each time you do this you halve the thickness of each layer, and double the number of layers. It takes surprisingly few doublings like this for the layers to become atomically thin, and at that point your colorant is thoroughly mixed.
Depending on the rolling technique, each time through the rollers might multiply the number of layers by 10, instead of just doubling it, so you likely only need around a dozen times through the rollers to mix a lump of pigment in so thoroughly you can’t even identify the layers under a microscope.
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